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Low cost SD datalogger?

I've seen - but can't find :( - a couple of low-cost dataloggers (sub-$100) that sample a couple of analog channels to SD.

I'm looking for something I can use to help in postmortem analysis of some fielded equipment.

I need to sample two analog channels at around 250Hz; if I could get three channels, it would be gravy but not required. Need to be able to log for at least 24 hours; 48 would be better. 8 bit resolution is acceptable, but I'd prefer at least 12.

The unit must be battery-powerable, but does not need to be encased and nicely presented; I can put it in a jiffy box.

Any ideas?

Reply to
larwe
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We have it for CF, not for SD. We get data via USB, do don't care about package type.

10 bits, 2 to 8 channels (with 2 mux).

Approx. 32M per day or 1G per month. A 4G CF will last more than 1 year.

Yes, see how ugly our setup is. We plan on hiding it inside a toy penguin, with a USB cable as tail.

The data logger is AVR169, controller is Luminary ARM.

See:

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But programming not included, except for a Jtag header.

Reply to
linnix

CF card has 50 delicate pins , it is Obsolete , no one uses it anymore .

SD is modern , and Forthrite HLL will be avail soon .

No need for Linux , nor Gcc ,GNU ,C/C++

Forthrite has no manual , no text , no English .

It is faster to program , because all programming is translate thru left brain , text to picture .

Forthrite is not text , picture only . You can program low level in seconds without any books , nor manuals .

Reply to
werty

not for SD.

CF is fine, but this doesn't look like an actual product; it looks like a prototype built on a board intended for something else.

Or is it just the little CF board that contains the datalogger? Is it available as an actual assembled product, with firmware preloaded? (I have AVR dev tools, of course, but don't want to have to write the software myself).

Reply to
larwe

AHA! Found it

Reply to
larwe

Apart from most of the bigger and pro digital cameras, anyone who wants maximum speed, or anyone wanting to replace an IDE hard disk for a diskless system. CF Won't go away anytime soon.

Vinculum's new USB host chip also makes USB memory a very attractive option.

Reply to
Mike Harrison

CF, not for SD.

actual product; it looks like

The prototype board is for sensors.

The CF board is standard IDE.

There are four boards here:

  1. Luminary Micro LM3S811 --- 40 pins cable ---
  2. Sensor boards --- 6 pins cable ---
  3. AVR169 --- 40 pins IDE cable ---
  4. IDE-CF board

This will enter the Circuit Cellar contest next month, so more detail to be released.

Reply to
linnix

They've been saying that for years, but the manufacturers just won't listen.

16G CFs are hitting the market now.
Reply to
linnix

werty escribió:

but I think that CF is faster than others, pararell (16bit) vs serial comunications. Take a look at the SLR digital cameras, all uses CF (Sony A100 includes a CF socket... and sony ALWAYS uses his memory Stick!!!)

Reply to
Fleming

1G/month * 12months = 12G/Year. Surely 4G lasts 4 months?
Reply to
Tom Lucas

messagenews: snipped-for-privacy@j27g2000cwj.googlegroups.com...

Yes, of course. We (terrain and sub-terrain mappings) need 16G (~$300) per week and the OP need 16G per year.

Then, we can archive in 2 DL DVD for 20 cents per week.

Reply to
linnix

arell (16bit) vs serial

The fastest CF is approximately 20MBytes/sec, or 10 MHz/bit or 160MHz/CF.

10 of them can store a 1.5GHz signal.

The nice thing about simple parallel interface is that you can phase delay the signal and clock them into multiple CFs. We just can't do that with SD.

Reply to
linnix

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